ERROR opening https://cactus.nci.nih.gov/chemical/structure/N0CCc1cc2OCOc2cc1C0C3c4ccccc4C%28%3DO%29O3/file?format=sdf&get3d=True  -- N0CCc1cc2OCOc2cc1C0C3c4ccccc4C%28%3DO%29O3 could not be loaded.